Hi, how to determine free cash flow as well as for question b and c ?

Company ABC is investigating an expansion of its services. After consultation with industry, the following two projects are available for investment: Project A Project B CAPEX / Initial Outlay $400,000 $600,000 Project life 5 years 3 years Revenue (per year) $300,000 $500,000 Variable costs $50,000 $60,000 Operating expense $100,000 $150,000 Investment in Net Working Capital (Year () $40,000 $50,000 The company's tax rate is 30% and uses a straight-line depreciation method. There will be no 'salvage value associated with these projects at the end of their project life. The company also anticipates it will recover all of the NWC at the end of the project. Company ABC has a required rate of return of 7% per annum. a) Determine the Free Cash Flows, for each year, to the firm for both projects. b) Identify which project you recommend the company invest. c) Using your own words, briefly describe how to use the techniques of sensitivity, scenario and simulation analyses to estimate project risk